85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/*-------------------------------------------------------------------------
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*
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* xlogbackup.c
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* Internal routines for base backups.
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*
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* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* src/backend/access/transam/xlogbackup.c
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "access/xlog.h"
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#include "access/xlog_internal.h"
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#include "access/xlogbackup.h"
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/*
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* Build contents for backup_label or backup history file.
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*
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* When ishistoryfile is true, it creates the contents for a backup history
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* file, otherwise it creates contents for a backup_label file.
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*
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* Returns the result generated as a palloc'd string.
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*/
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char *
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build_backup_content(BackupState *state, bool ishistoryfile)
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{
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char startstrbuf[128];
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char startxlogfile[MAXFNAMELEN]; /* backup start WAL file */
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XLogSegNo startsegno;
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StringInfo result = makeStringInfo();
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char *data;
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Assert(state != NULL);
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/* Use the log timezone here, not the session timezone */
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pg_strftime(startstrbuf, sizeof(startstrbuf), "%Y-%m-%d %H:%M:%S %Z",
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pg_localtime(&state->starttime, log_timezone));
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XLByteToSeg(state->startpoint, startsegno, wal_segment_size);
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XLogFileName(startxlogfile, state->starttli, startsegno, wal_segment_size);
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appendStringInfo(result, "START WAL LOCATION: %X/%X (file %s)\n",
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LSN_FORMAT_ARGS(state->startpoint), startxlogfile);
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if (ishistoryfile)
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{
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char stopxlogfile[MAXFNAMELEN]; /* backup stop WAL file */
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XLogSegNo stopsegno;
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XLByteToSeg(state->stoppoint, stopsegno, wal_segment_size);
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XLogFileName(stopxlogfile, state->stoptli, stopsegno, wal_segment_size);
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appendStringInfo(result, "STOP WAL LOCATION: %X/%X (file %s)\n",
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LSN_FORMAT_ARGS(state->stoppoint), stopxlogfile);
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}
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appendStringInfo(result, "CHECKPOINT LOCATION: %X/%X\n",
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LSN_FORMAT_ARGS(state->checkpointloc));
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appendStringInfo(result, "BACKUP METHOD: streamed\n");
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appendStringInfo(result, "BACKUP FROM: %s\n",
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state->started_in_recovery ? "standby" : "primary");
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appendStringInfo(result, "START TIME: %s\n", startstrbuf);
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appendStringInfo(result, "LABEL: %s\n", state->name);
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appendStringInfo(result, "START TIMELINE: %u\n", state->starttli);
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if (ishistoryfile)
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{
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char stopstrfbuf[128];
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/* Use the log timezone here, not the session timezone */
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pg_strftime(stopstrfbuf, sizeof(stopstrfbuf), "%Y-%m-%d %H:%M:%S %Z",
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pg_localtime(&state->stoptime, log_timezone));
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appendStringInfo(result, "STOP TIME: %s\n", stopstrfbuf);
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appendStringInfo(result, "STOP TIMELINE: %u\n", state->stoptli);
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}
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data = result->data;
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pfree(result);
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return data;
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}
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